title: Megacystis in the first trimester.
mesh_terms: D002869:Chromosome Aberrations; D004322:Drainage; D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis* / Q000196:embryology / Q000235:genetics / Q000628:therapy; D006801:Humans; D015994:Incidence; D019152:Paracentesis; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011379:Prognosis; D016216:Ultrasonography, Prenatal; D014524:Urethral Obstruction / Q000175:diagnosis* / Q000196:embryology / Q000235:genetics / Q000628:therapy; D001743:Urinary Bladder / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000196:embryology